Heterologous image registration method based on FAST feature extraction and PIIFD feature description

A heterogeneous image and feature description technology, applied in the field of heterogeneous images, can solve the problem of low registration accuracy, and achieve the effects of improving accuracy, enhancing similarity, and reducing false matching.

Inactive Publication Date: 2019-07-12
SHANGHAI JIAO TONG UNIV +1
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The registration accuracy of the existing heterogeneous image registration methods is still low, and there is a huge space for research in terms of efficiency and performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heterologous image registration method based on FAST feature extraction and PIIFD feature description
  • Heterologous image registration method based on FAST feature extraction and PIIFD feature description
  • Heterologous image registration method based on FAST feature extraction and PIIFD feature description

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The technical problem to be solved by the present invention is to provide a heterogeneous image registration method based on FAST feature extraction and PIIFD feature description.

[0031] The heterogeneous image registration method disclosed in the present invention includes the following steps:

[0032] Step S1, using the FAST algorithm to respectively extract the corner points of two heterogeneous images as feature points;

[0033] Step S2, using PIIFD to respectively construct feature descriptors for the obtained feature points;

[0034] In step S3, for the obtained feature point pairs, a matching strategy based on the nearest neighbor ratio threshold value is used to obtain rough matching point pairs, and further, RANSAC is used to eliminate mismatches to obtain fine matching point pairs.

[0035] by figure 1 The infrared image shown and figure 2 The visible light image registration shown as an example, the feature fine matching point pair obtained by the metho...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a heterologous image registration method based on FAST feature extraction and PIIFD feature description. Through FAST feature extraction, PIIFD feature description, nearest neighbor proportion threshold coarse matching, RANSAC mismatching elimination and least square affine transformation calculation, a spatial transformation relation between heterologous images can be obtained. The technical solution of the invention has the advantages of perfect process, high robustness and strong practicability. The method is not easily influenced by the quality of the heterologous image, can overcome the interference of the image background and other factors on feature extraction, and can well solve the problems of low precision, large error, low speed and the like in the registration of the heterologous image at present.

Description

technical field [0001] The invention relates to a heterogeneous image method, in particular to a heterogeneous image registration method based on FAST feature extraction and PIIFD feature description. Background technique [0002] Heterogeneous image registration is a technical difficulty and a necessary step in heterogeneous image fusion. Specifically, heterogeneous image registration is to find the spatial transformation relationship of pixels between heterogeneous images, so that the pixels in one image are accurately mapped to the pixels in another image. In the past three decades, image registration and fusion technology has developed rapidly and has been gradually applied to important fields such as military affairs, telemetry, material mechanics, medical applications, and digital imaging. [0003] Heterogeneous image registration is inherently extremely complex. The imaging mechanisms of heterogeneous images are usually different, so the quality and characteristics ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
CPCG06T7/33G06T2207/20164
Inventor 刘亚东戴进墩罗林根傅晓飞余钟民
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap